Dr. Harold Roy-Macauley, new Director General of AfricaRice, doesn't want to just improve rice science for Africa, he wants to make the continent a world leader in it.

The rice sector in Africa is going to be “evidenced-based and therefore very solid and powerful,” he says. At a time when the developed world agonizes over the value of science, Africa sees an opportunity to grab a lot of market share by using science to improve their food production and become a next exporter, and then the rest of the world can play catch up.

Mutations in the presenilin-1 gene are the most common cause of inherited, early-onset forms of Alzheimer's disease. In a new study, published in Neuron, scientists replaced the normal mouse presenilin-1 gene with Alzheimer's-causing forms of the human gene to discover how these genetic changes may lead to the disorder. Their surprising results may transform the way scientists design drugs that target these mutations to treat inherited or familial Alzheimer's, a rare form of the disease that affects approximately 1 percent of people with the disorder.

Where you receive medical care impacts many things - including whether or not you receive inappropriate medical tests, according to a new study.

Researchers from NYU Langone Medical Center and its Laura and Isaac Perlmutter Cancer Center, in a new retrospective study publishing online March 12th in JAMA Oncology, conclude that patients with low-risk prostate or breast cancer were more likely to receive inappropriate imaging during treatment, based on the region of the country in which they received medical care.

oday marked the publication of the first ever genome-wide association study of rosacea, a common and incurable skin disorder. Led by Dr. Anne Lynn S. Chang of Stanford University's School of Medicine, and co-authored by 23andMe, the study is the first to identify genetic factors for this condition.

The human eye is optimized to have good color vision at day and high sensitivity at night. 

But until recently it seemed as if the cells in the retina were wired the wrong way round, with light traveling through a mass of neurons before it reaches the light-detecting rod and cone cells.

New research presented at a meeting of the American Physical Society has uncovered a remarkable vision-enhancing function for this puzzling structure.

I’ve probably lost count of the number of ‘WATER ON MARS’ and related headlines I’ve read over the years. It’s an interesting case study of how a scientific theory gains support as more evidence is collected, until it becomes something ‘that is known’.

But last week we heard evidence that Mars has lost some water – an entire oceans worth in fact.

Where is the line between advocating science and protecting corporate profits? It's usually only clear to people trying to show the other side is involved in wrongdoing. A paper in PLOS Medicine uses sugar industry documents to note how they influenced research priorities for the 1971 US National Caries Program (NCP).

When it comes to buying things, our brains can't see the big, black-and-white forest for all the tiny, colorful trees, according to marketing scholars at The Ohio State University, who say that people who were shown product images in color were more likely to focus on small product details--even superfluous ones--instead of practical concerns such as cost and functionality.

The findings in the Journal of Consumer Research mesh well with science, they believe, namely in how vision evolved in the brain, and suggest that viewing objects in black and white helps our brains focus on what's most important. The researchers recruited people through Amazon Mechanical Turk, a service that provides online study participants for fee, so caveat emptor on the results.

Studying the intricate fractal patterns on the surface of cells could give researchers a new insight into the physical nature of cancer, and provide new ways of preventing the disease from developing.

This is according to scientists in the US who have, for the first time, shown how physical fractal patterns emerge on the surface of human cancer cells at a specific point of progression towards cancer.

Publishing their results today, 11 March, in the Institute of Physics and Germany Physical Society's New Journal of Physics, they found that the distinctive repeating fractal patterns develop at the precise point in which precancerous cells transform into cancer cells, and that fractal patterns are not present either before or after this point.

New research has shown that patients having heart surgery do not benefit if doctors wait until a patient has become substantially anaemic before giving a transfusion.

In the UK, about half of all patients having cardiac surgery are given a red blood cell transfusion after the operation, using up to ten per cent of the nation's blood supply. The proportion of patients having a transfusion is high because blood loss and severe anaemia are common after cardiac surgery and transfusion is the preferred treatment. Blood loss causes anaemia which doctors detect by measuring the red cell count or haemoglobin level - a low level triggers transfusion.